Improved anti-frictiom- box



dirti-ir' '536mm @anni (Milian.

JOSEPH L. BARRY, 0E PHILADELPHIA, rEnNsYLvANnn-Asslenon 'ro HIMsELE ANDsAMUEL ZANE; AssIGNoEs 'ro rHEMsELvEsAND EBENEZEE H. BAILEY, or sAMEPLAGE.

Letters-Patent No. 96,720, dated November 9, .1869.,

IMPRV'ED ANTI-FRICTION BOX.

The Schedule referred to in these LetteraPatent and making part of thesame. l

I, JOSEPH L.V PARRY, of Philadelphia, county of Philadelphia, State ofPennsylvania, -have invented an Improved Anti-Friction Box, of which thefollowing is a specification.

Nature and Object .of the Intent-ion.

Description of theAccmnpafng/ing Drawing.

Figure 1 is a .sectional view of my improved anti.-

friction box;

Figure 2, a front view, with portions removed; and

Figure 3 illustrates'a modification of ,my invention.

General Description. f

A represents part of the axle of a wagon, and B, part of the hub of awheel, or Amay be supposed to represent any revolving shaft, that of apropeller for instance, and B, part of a box or bearing.

In -the following description-of the invention, however, A will bereferred to as representing part of an axle, and the hollow cylinder Bas partof the hub of a wheel, revolving on the axle.

Two collars or disks, a and a', are formed on the axle, and against theperipherie's of these disks bear the portions d and d of a series ofrollers, D, six being shown in the present instance.

These rollers arearranged around the axle atequal distances apart fromeach other and from the centre of the axle, asshown in iig. .2, and theenlarged portions e of the. rollers are arranged to bear against theinside ofthe hollow cylinder B, which is made in two parts, the cylinderproper` and a .fo ll'ower, f, arranged for insertion into and withdrawalfrom the cylinder, in which is formed a shoulder, h, the enlargedportions of the rollers ttiug freely between the said shoulder and theinner endlof the follower, so thatA when the latter is in its place thewhole of the rollers aremaintained in their proper lateral position inthe cylinder or and the latter, with their rollers, are maintained intheir proper position, laterally, on the axle, owing to the enlargedportions of therollers fitting freely between the disks a and-a', on thesaid axle.

ASmall journals, i i, are formed on the opposite ends of the'rollers,for turning freely in rings E and E', the two rings being connectedtogether vby rods m fm.

It will be observed that no portion ofthe axle bears against therollers, excepting the 'peripheries of the disks aand a', and that nopart of each roller bears against the cylinder, excepting theenlargedportion.

It is essential, in carrying out my invent-ion, that the circumfereucesof the healing-portion of the axle, rollers, and cylinder or box shouldbe properly-proportioned in relationtoeach other.`

Thus, the circumference of the portions d and d of each roller shouldvbear, as near as possible, the same proportion in relation tothecircumference of the disks of the axle, as the circumference of theenlarged portion e of each roller bears to the circumference of thevinterior of that portion of the. cylinder against. which the rollersbear, so that the movement of the vportions d of therollers over and incontact with the disks of -the4axle will be in unison with the movementof the enlarged portions of the rollers, over and in contact with thecylinder, or, in other words, so that there can be no frictional drag ofthe rollers'either against the cylinder or axle.

Iu-the modification illustrated in fig. 3, the axle has but one disk,fitting between two enlargements of the rollers, which bear against theinterior of the cylinder 0r box.

This modiiication will be readily understood without explanation, aswillalso the proposed arrange ment of the rollers, for a bearing fora'revolvingshaft.

Claim.

An anti-friction box containing' a series of rollers, constructed,adapted, and proportioned in respect to an axle or shaft, and cylinderIor box. substantially as set forth.

In testimony whereof, I have signed my name 'to thisv specification, inthe presence of two subscribing witnesses.

' J OSElE'H L. PARRY.l \Vitn esses:

WM. A; STEEL,

HARRY SMITH.

